Bottom for antirust tinware



(No Model J. MoLAUGHLIN. BOTTOM FOR ANTIRUST TINWARE.

No. 582,758. Patented May 18, 1897.

Iii/1 67126011 z dmes Rili LCL-z yhlm UNITED STATES i ATENT FFICEQ JAMES R. MOLAUGHLIN, OF CLIFTON SPRINGS, NE\V YORK, ASSIGNOR TO THE LISK MANUFACTURING COMPANY, LIMITED, OF CANANDAIGUA, NEIV YORK.

BOTTOM FOR ANTIRUST TINWARE.

SPECIFICATION forming part of Letters Patent No. 582,758, dated May 18, 1897.

Application filed fieptemher 13, 1895. Serial No. 562,381. (No model.)

To all whom, it nury concern.- rosive material will answer the purpose fully Beit known that I, JAMEsR. MOLAUGHLIN, as well, my object being to provide a plate of Clifton Springs, Ontario county, NewYork, which will set up a galvanic action with the have invented certain new and useful Imsides of the pail when the vessel is filled with 55 5 provements in Bottoms for Antirust Tinware, liquid and prevent the sides of the pail from of which the following is a specification. rusting.

My invention relates to bottoms for articles Beneath the non-corrosive plate I arrange of tinware generallyknown as antirustf and the bottom proper of the pail, which I desigthe object I have in view is to provide a botnate by the reference-figure 8, and which may 60 I tom of such construction that the upper or be of any suitable material, preferably tin, non-corrosive plate or bottom will have room and concave,-while the upper plate is fiat to expand or contract without being retarded and extends straight across the bottom of the in its movement by the bottom proper of the vessel. The plate or bottom 8 is provided vessel, whereby all danger of the edges of the with a downwardly-turned portion 9, forming 65 lower bottom being pulled away from the sides a shoulder 10, which fits into the angle formed of the vessel by the sudden expansion of the by the downwardly-turned portion of the upupper plate, as when the pail or other vessel per or zinc plate. The lower edge of the poris filled with hot water, will be avoided, and tion 9 is turned outwardly, forminga rest for whereby in case of an accidental puncture of the pail, and its edge is then turned up over 70 one of the bottoms the other bottom may not the flanges or parts 4: and 7, and the edge of be afiected and the vessel will still remain the part 9 is then securely soldered to the tight. sides of the pail. The shoulder 6 is also sol- Myinvention consists, generally, in providdered to the inside of the pail, so as to preing a space between the upper and lower botvent the liquid from getting down in between 75 2 5 toms or plates, said space gradually increasthe sides of the pail and the downwardlying in size toward the middle of the pail, all turned portion of the upper plate and thereby as hereinafter described, and particularly reaching the tin bottom proper of the pail. pointed out in the claim. WVhen the pail is filled with hot water, the

In the accompanying drawings, forming weight of the water will depress the upper 80 part of this specification, Figure 1 is a side plate slightly, particularly near the center of elevation of a pail embodying my invention, the pail, and the space beneath the plate will the wall being broken away to show the doupermit it to expand to its limit without comble bottom and the space between the upper ing in contact with the tin bottom, so as to and lower plates. Fig. 2 is a sectional view break its connection with the sides of the 85 3 5 of the lower part of a pail, showing a modifipail. In this way the injurious effect of the cation of the manner of securing the upper unequal expansion of the two plates is neuplate in the pail or vessel. tralized and the pail may be filled with a liq- In the drawings, 2 represents a pail providuid of very high temperature without any ed with the usual bail, and having a crimp or danger 0 damaging the vessel. It will also 0 4o bend 3 in its side walls near the lower end of be seen that if one of the bottoms should bethe pail and an outwardly-turned flange 4 at come punctured the other would not be afthe extreme lower end of the sides of the vesfected, and hence the pail or vessel would sel. A plate 5, of zinc or other non-corrosive still remain tight. material, is provided to fit into thelower end of In Fig. 2 I have shown the upper plate 11 5 the pail, and is provided with downwardlyforced down from the top of the pail to a point turned edges, forming a shoulder 6 near the opposite the crimped portion in the sides and crimped portion 3, and with a foot or flange secured in that position to the sides of the 7, which extends out flush with the outer pail, so that it may be removed at any time edge of the flange 4, as shown in Fig. 1. without disturbingthelowerbottom12. Both I00 I do not confine myself to the use of the zinc plates are made slightly concave, but the upupper plate or bottom, as any other non-corper does not touch the lower except at its edges, as shown, so that a space is provided between the two bottoms to take up the expansion of the plate 11, as described above, and also to prevent both bottoms being pun ctured at the same time, as above stated. The lower plate 12 has its edges secured to the sides of the pail in the same manner as the bottom, (shown in Fig. 1,) as this is a cheap and convenient way of making the connection; but any other method which will hold the lower plate in position may be employed with equally good results.

Having thus described my invention, I claim as new and desire to secure by Letters Patent I11 an open-topped metallic vessel, the combination with the sides provided with an outwardly-turned flange or foot at the lower end, of a concave plate having a downwardlyturned portion, the edges of said portion being turned out and up over the edge of the flange or foot provided 011 said sides, a zinc plate arranged above said concave plate, and having a downwardly-tnrned portion adapted to nest with the downwardly-turned portion of said concave plate, a water-tight joint bein g provided between the shoulder formed by the downwardly-tnrned portion of said zinc plate and the sides of the vessel, whereby contact of the liquid therein with the concave plate is prevented, and a space being formed between the two plates to provide for the unequal expansion of the same and whereby a puncture of one bottom may not aitect the other bottom, substantially as described.

In testimony whereof I have hereunto set my hand this 5th day of August, A. D. 1895.,

JAMES It. MCLAUGIILIN.

In presence of O. G. IIAWLEY, RICHARD PAUL. 

